No Trace: At 1st level an Infiltrator becomes so good at what she does that she leaves almost no trace behind when she uses any of the following skills: Acrobatics, Climb, Disable Device, Escape Artist, and Sleight of Hand. Anyone using Perception or Survival to track the Infiltrator suffers a penalty of 1 per 2 class levels the Infiltrator possesses. Additionally, she gains a similar competence bonus to any Stealth checks made provided she has remained stationary and not taken any actions for at least one round.

Improvised Implements: At 2nd level the Infiltrator gains Catch Off-Guard as a bonus feat. She does not suffer any penalties for using an improvised melee weapon. Unarmed opponents are flat-footed against any attacks she makes with an improvised melee weapon. Additionally, she no longer takes a -4 penalty when using the Climb and Disable Device skills without the proper tools.

Sweep: At 3rd level an Infiltrator can take in the lay of the land with a single sweep of her eyes that often isn't perceptible to those around her. This sweep provides a +4 circumstance bonus to Perception checks out to a distance of 30' (but not behind her). Addtionally, she may attempt a Perception check to intentionally search for a specific item or creature as a swift action instead of a move action.

Improved Evasion: When exposed to an effect that allows a Reflex save for partial damage the Infiltrator suffers only half damage even on a failed save, and no damage on a successful one. This ability may only be used when wearing light or no armor. This ability counts as Evasion for the purposes of meeting prerequisites.

Skill Mastery: At 5th level an Infiltrator selects a number of skills from her class list equal to 1 + her Intelligence modifier. When making a check using one of these skills, the Infiltrator may take 10 even if stress and distractions would normally prevent her from doing so.

Fast Stealth: At 6th level the Infiltrator may move at full speed while taking no penalties to Stealth checks.

Improvised Weapon Specialization: At 7th level, an Infiltrator's attacks with improvised weapons become even more deadly. She gains a +2 bonus to damage rolls with any improvised weapon.

Improved Sweep: At 8th level the Infiltrator's ability to get the lay of the land improves. A sweep now reaches out to 60' and as well as detecting threats and valuables behind her. Also, it immediately ascertains the relative strength of these dangers, with a successful check relating the danger's strength relative to the Infiltrator, i.e. higher, lower, or similar level/HD.

Hide In Plain Sight: At 10th level an Infiltrator can use the Stealth skill to hide, even while being observed.